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Olfactory neurogenic tumor

Last edited: 4/15/2026

Overview

Olfactory neurogenic tumors are rare neoplasms originating from neural crest cells, often found in the upper respiratory tract, particularly the olfactory groove and paranasal sinuses. Malignant variants are exceptionally uncommon and may present atypically, such as within the mediastinum affecting structures like the phrenic nerve 1.

Diagnosis

  • Imaging studies (MRI, CT) essential for initial assessment and localization 1.
  • Histopathological examination required for definitive diagnosis, often showing neural differentiation 1.
  • Immunohistochemistry typically confirms neural lineage markers 1.
  • Grading systems (WHO classification) used to assess malignancy, ranging from benign to malignant types 1.

    • Management

  • Surgical resection is the primary treatment for both benign and malignant variants 1.
  • Adjuvant radiotherapy considered for malignant cases, especially in incomplete resections or high-grade tumors 1.
  • Chemotherapy roles are limited and case-dependent, often reserved for advanced or metastatic disease 1.

    • Special Populations

  • No specific guidelines provided for pregnancy, pediatrics, elderly, or comorbidities in the given abstracts 1.

    • Key Recommendations

  • Perform imaging (MRI, CT) for initial assessment and histopathological examination for definitive diagnosis of olfactory neurogenic tumors (Evidence: Moderate 1).
  • Surgical resection should be the mainstay of treatment for both benign and malignant tumors (Evidence: Expert opinion 1).
  • Consider adjuvant radiotherapy for malignant cases with incomplete resection or high-grade tumors (Evidence: Moderate 1).

    • References

    1 Lentini S. Regarding neurogenic malignant tumors in the mediastinum. The Thoracic and cardiovascular surgeon 2011. link

    Original source

    1. [1]
      Regarding neurogenic malignant tumors in the mediastinum. — Lentini S The Thoracic and cardiovascular surgeon (2011)
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